Governor valve



I A. K. HI "AN;

GOVERNO VE.

Y I APPLICATION FILED SEPT. 1a, I920. 1,40 ,01 1 Patented Feb. 7, 1922.

I Ivwnrfar Jill. )Vz'm'hmam UNITED STATES PATENT orFlcEf f ALV x. HLNGHILA Q P PHILADELPHIA, PENNSYLVANIA, ASSIGNOR' o oNn- FOURTH T0 o'HAnLEs H. MOB'1ON AND ONE-FOURTH 'ro CHARLES; H. QUIMBY, BOTH or PHIL DELPHIA, ENNSYLVANIA. a

eovEnNon vALvn T0 all-whomitmay concern: j I

Be it known that I, ALVA K;}H1N0HMAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvementsin Governor Valves, of which the following is-a specification. 7 g V j I This invention relates to new and useful improvements in governor valves, particularly adapted for fluid pressure enginesof the character having high and low pressure chambers with a balance piston for regulating the flow of fluid pressure from the high pressure chamber to the. lower pressure chamber and has for its primary object the provision of a pistonso, constructed that its stem will form a passage between the chambers when the high pressure chamber is open to receive fluid pressure from a source. 7

Another object of this invention is the provision of the piston with one of its heads so constructed that it will act as a combined valve and passageway. v

A further object. of this invention. is the provision of an adjusting means adapted to vary the stroke ofthe piston to permit'the device to be usedin conjunction with fluid sources varying in pressures, but still permit a predetermined amount of pressure to be delivered by the governor to a device A With these and other objects in view, as will become moreapparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement ofcparts :aswill be hereinafter more fully described and claimed. For a complete understanding of my invention, reference is to be'had to the following description and accompanying drawing in which v u a Figure 1 is a vertical sectional view of a governor valve forengines constructed in accordance with my invention. g

vFigure 2 is a horizontal sectional view taken substantially on the line 2-.-2 in Figure-l, and v p Figure 3 is a vertical sectional view illustrating a modified form of myiinventionu Referring to the drawings indetafl, the

numeral 1. indicates .a bod or casing that has formed in one end a big pressur'e' chamher 2 of considerable length and of a comparatively small diameter and which cham- Specification of Letters Patent.

ber opens outward-1y through one end of the body or casing 1, to have connection with a power source (not shown) or in other words to form an inlet port 3v to the high pressure chamber. A comparatively long piston i is slidably mounted in thehigh pressure-chamber 2 and is provided with a transversepaspasses 7 are formed in thebody or casing 1,

and have communication with the high pres- Patented Febi 'f, 1922.

Application filed September '18, 1920. Serial No. 411,126.

sure chamberadjacent each end 'thereofso J that when the passage 5 of the piston 4 isin alignment, with the by-passes .7, the fluid pressure canpass into the high pressure chamber 2 from the intake port 3, the piston 41 acting as a valve for controlling the fluid pressureinto the high ressure chamber 2.

A low pressure cham er 8 is formed in the body or casing 1', and is of a considerably larger diameter than the high pressure chamber 2.and is closed by a removable cover 9 having an outlet port 10, adaptedtobe connected with a fluid engine in anyg well known manner; An 'openingll is formed within the body or casing 1, betweenfthe high and low ressure chambersand defines walls 12 provi 7 ed with openings to slidably receive a'piston stem 13, one endof which is secured tovthe piston 4 while its other end is detachably secured to a piston 14 located in the low pressure chamber 8 and of an'area greaterthanthat of the piston-4. v Stufiing boxes 15 are securd in the walls 12 to establish aleak-proof connection between the piston stem 13 and. said walls and the piston stem 13 is-provided with a pawage 16 that opens 'outwardly 'through one end thereof and communicates with openings 17 formed in the stem adjacent the piston A. Thus it will be seen-that the fluidpressure within the high pressure cham 7 her 2 can pass into ,theilow pressure chamber 8 and when the pressure reaches-apredetermined degree in the low pressure-chamber 8, the piston'14 is forced downwardl causing the piston 4 to move downward y;

bringing the passage 5 out oi registration with the by-passes 7 thus preventingfluid pressure from the sourceor intake ports- 3 from entering the high pressure chamber 2. As the degree of pressure diminishes in the and thence to the engine connected to the low ward'ly bringing the passage 5 into 'registration with the by-passes 7 permitting the fluid 'pressure to enter the high pressure chamher and pass into the low pressure chamber 8 by way of the passage 16 through the piston stem 13.

A passage 18 is formed in the body or casing 1, and communicates with the intake port 3 and receives an extension 19 of a bypass pipe 19, the upper end of which is connected with a port 20 communicating with the low pressure chamber 8. A valve 21 is located in the bypass pipe 19 which provides for directly conveying fluid pressure to the low pressure chamber'8 from the intake port 3, the amount, admitted being 1 controlled by the valve '21. By this arrangement the low pressure chamber 8 can receive a higher pressure of fluid than would be obtainable through the passage 16 of the piston stem 13, or in other words, fluid pressure from the intake port 3 can .be introduced directly into the low pressure chamber 8 pressure chamber permitting the engine to run on a high pressure obtainabledirectly from the source. I

A port 22 communicates with an equalizing chamber 23 formed by the lower face of the piston 14 and one of the walls 12, and said port 22 has connected thereto a ipe 2'1 whichv is in turn connected to the y-pass pipe 19 and is provided with a valve 25. Thejby-Pass pipe 19 is provide'd with valves 26 and 27 arranged above and below the pipe 2 1. When it is desired to increase the amount of pressure the low pressure chamber 8, the valve 26 is closed and the valves 21, 25 and 27 are opened permitting fluid pressure-t0 pass directly intothe equal- .i'zingchamb'er23 from the intake port 3,

thus requiring a large amouut oi pressure to be had in the low pressure chamber 8 before the; pistons 14 and 4 will be forced downwardly to stop the supply of pressure to the "low pressure chamber 8 from the igh pressure chamber 2. A port 28"; is

formed injthe body or casing 1 and communicates'withthe high pressure chamber 2 and has connected'thereto a pipe 29 which in turn connected'to the bypass 19 between the valves27 and 21 and said pipe 29 is provided with a valve'30. With the valve 2'7 closed and with the valves 21 and 30 open, fluid pressure directly" from the intake port 3 can be introduced into the high pressure chamher 2 in the desired amount byregulating either the valves 21, or 30. When the fluid ressure is admitted to the'hig'h pressure 2,

y wayofithe-by pass pipe-19, it produces means whereby the device I can be regulated to decrease the amount of fluid pressure in the. low pressure chamber 8 V t .The closure plate creep '9is provided with adjusting screws 31 which provides means whereby the stroke of the pistons and their stems can be varied for the purpose of regulating the amount of fluid pressure to the low pressure chamber 8. By adjusting the screws 31 in the direction of the piston 1&1 will'shorten the stroke of said piston and will not permit the passage 5 to fully register with the by-pa'ss 7 thus reducing or retarding the How of fluid pressureto the low 'press rechamber from' the high pressure chamber and fromthe intake port to the high pressure chamber. Q

The by-passpipe 19 is provided with a draining valve 32 which will permit said pipe to be drained whenever desired.

Referring to Figure 3 which illustrates a modified form of my invention, the-only difference residing in this form of my invention over what has been heretofore described and illustrated in Figure 1, is that the high pressure chamber 2 is of a greater size than the high pressure chamber 2 shown in Figure 1. By having the high pressure chamber 2 larger permits a greater pressure in the low pressure chamber, as it requires a greater pressure in said low pressiire chamber to force the piston downwardly for bringing the passage 5 out'of registration with the by-pass 7 I While I have shown and described the preferred embodiment of'iny invention, it will be understood that minor changes in construction, combination and arrangement 1 of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus "described my invention, I claim; 1 1

1'; A governorvalve comprising high and lowpressurechambers having inlet and outlet port's respectively, a piston stemieiztend- I ingiinto each chamberand having a'p'as' sageway therethroug'h eommunieating with 'saidchainbers, pistons secured to said stem and'locatedin said 'chambers' and one of said pistons having a passage and apart communicating with the passage and with the intake port, and said high pressure-chamber having by-pass'es' communicating there-V "with and the passage of said pistons adapted to align with said by-passes when the piston is in one position and moved in said position by forces acting against the other piston;

2. A governor valve comprising'jhigh and 15w pressure chambers having inlet and out! let ports respectivelyiand said low pressure 7 i chamber" being 'of a diameter greater than the diameter" of thiehigh pressure chamber, a hollow isto stem in saidchambers and capable of reciprocatory motion, a comparatively large piston secured to the stem and located in the low pressure chamber, a cornparatively long and small piston secured to said stem and located in the high pressure chamber, and having a passage and a port communicating with said passage and intake port, said high pressure chamber having by-passes communicating therewith adjacent each end thereof, said passage of the piston adapted to align with the by-passes when said piston is in one position and moved in said piston by the forces, acting against the last named piston.

3. A governor valve comprising a casing having high and low ressure chambers provided with inlet an outlet ports respectivel'y, said casin having by-passes communicating with t e high pressure chamber adjacent each end, said chambers differing in sizes, pistons reciprocably mounted in said chambers, a hollow'piston. stem connecting said pistons and establishing corn munication between said chambers, one of said pistons having a passage and a port adapted to align with the by-passes to permit pressure from the inlet port to enter the low pressure chamber, by way of the high pressure chamber and hollow piston stem.

4. A overnor valve comprising a casing havin iigh and low pressure chambers provi ed'with 'inlet and outlet ports respectively, said casing having a by-pass communicating with the high pressure chamber at two points, pistons reciprocally mounted in said chambers, a hollow piston stem connecting said pistons to cause them to move in unison, one of said pistons having a passage and a port and said passage adapted to align with the by-pass when said piston is in one position to permit pressure from the intake port to enter the low pressure chamber by way of the high pressure chamber, and an adjusting screw carried by the casing and adapted to regulate the stroke of sald pistons.

5. A governor valve comprising a casing having high and low pressure chambers provided with inlet and outlet rts, said casing having a by-pass communlcating with the high pressure chamber at two points, pis-' tons reciprocally mounted in said chambers,

a hollow piston stem connecting said pis tons, one of said pistons having a assa'ge and a port communicating with t e low pressure chamber at points above and below its respective piston, said casinghaving a pair of ports, one of which communicating with the high pressure chamber and the other communicating with the inlet port, a by-pass pipe connected to said ports, and

vvalves arranged within said by-pass ipe to regulate the flow of fluid pressure t rough said byass from the inlet port to either side of t e piston located in the low pressure chamber and to the high pressure chamber.

In testimony whereof I affix my signature.

ALVA K. HINCHMAN. 

